HTSUS Chapter 84 on the customs broker exam

Chapter 84 of the Harmonized Tariff Schedule covers Nuclear reactors, boilers, machinery and mechanical appliances; parts. Across the released customs broker exams, 10 questions turn on classifying goods in this chapter. Drawn from 9 released sittings, April 2018 through October 2025. Below: every heading CBP has tested, the official heading text, and each exam question that used it.

8481 — Taps, cocks, valves and similar appliances, for pipes, boiler shells, tanks, vats or the like, including pressure-reducing valves and thermostatically controlled valves; parts thereof

Of the four choices below, which is the best CLASSIFICATION of a solenoid valve used to control the airflow within the suspension system of a motor vehicle?
April 2026 exam, question 33 · tests 8481.80.9005. Full question, answer and citation →
What is the CLASSIFICATION of a beverage dispenser machine designed to dispense both soda and non-carbonated soft drinks? The dispenser is made of stainless steel and incorporates solenoid valves that allow the components of a beverage to be mixed, and ultimately dispensed, on demand. It also features a “cold plate”, which uses a supply of ice provided by a different apparatus that does not accompany the instant merchandise at importation, to cool beverages before dispensing them (i.e., it is not imported with a refrigerating unit). The machine’s solenoid valves control the flow of liquid through the water and syrup lines, and their activation by a customer directly causes the machine to mix and release the beverages. The machine will be used in restaurants, supermarkets, and cafeterias.
October 2024 exam, question 39 · tests 8481.80.9005. Full question, answer and citation →

8419 — Machinery, plant or laboratory equipment, whether or not electrically heated (excluding furnaces, ovens and other equipment of heading 8514), for the treatment of materials by a process involving a change of temperature such as heating, cooking, roasting, distilling, rectifying, sterilizing, pasteurizing, steaming, drying, evaporating, vaporizing, condensing or cooling, other than machinery or plant of a kind used for domestic purposes; instantaneous or storage water heaters, nonelectric; parts thereof

What is the CLASSIFICATION of a radiator to be solely used as a part of a self-propelled bulldozer, with rows of tubing though which coolant flows, and brazed aluminum fins, which transfer heat from the coolant to the air flowing through the radiator?
April 2021 exam, question 29 · tests 8419.50.10. Full question, answer and citation →

8438 — Machinery, not specified or included elsewhere in this chapter, for the industrial preparation or manufacture of food or drink, other than machinery for the extraction or preparation of animal or fixed vegetable or microbial fats or oils; parts thereof

What is the CLASSIFICATION of a chocolate production line that includes a conveyor belt, a mixer, cooling tunnel, and cutters? The entire chocolate production line will be imported unassembled in one shipment.
April 2025 exam, question 26 · tests 8438.20.0000. Full question, answer and citation →

8443 — Printing machinery used for printing by means of plates, cylinders and other printing components of heading 8442; other printers, copying machines and facsimile machines, whether or not combined; parts and accessories thereof

What is the CLASSIFICATION of a printer that connects to an automatic data processing machine, transmits a facsimile, copies, and prints at a speed of 30 pages per minute?
April 2023 exam, question 15 · tests 8443.31.0000. Full question, answer and citation →

8467 — Tools for working in the hand, pneumatic, hydraulic or with self-contained electric or nonelectric motor, and parts thereof

What is the CLASSIFICATION of a hand-held, pneumatically-powered rotary sander, suitable for wood working?
October 2023 exam, question 47 · tests 8467.11.5090. Full question, answer and citation →

8472 — Other office machines (for example, hectograph or stencil duplicating machines, addressing machines, automatic banknote dispensers, coin-sorting machines, coin-counting or wrapping machines, pencil-sharpening machines, perforating or stapling machines)

What is the CLASSIFICATION of an electrically-powered tabletop machine used to count and stack U.S. Dollar bills? The machine also incorporates magnetic and infrared ink detection sensors for identifying counterfeit bills.
October 2018 exam, question 46 · tests 8472.90.9040. Full question, answer and citation →

8475 — Machines for assembling electric or electronic lamps, tubes or flashbulbs, in glass envelopes; machines for manufacturing or hot working glass or glassware; parts thereof

Of the four choices below, which is the best CLASSIFICATION of a machine that produces glass fibers? This machine is a highly specialized piece of equipment that operates at elevated temperatures to produce glass fibers using molten glass. Due to the size of the complete machine, it cannot be shipped on a single conveyance. The importer of record elected to enter the machine disassembled and in multiple shipments within six days at the Port of Newark. The first shipment was released pursuant to a special permit for immediate delivery upon arrival. After the components are imported, they will be delivered directly to the customer and will be assembled then.
October 2025 exam, question 34 · tests 8475.29.0000. Full question, answer and citation →

8482 — Ball or roller bearings, and parts thereof

Company A imported seven ball bearings with integral shafts from Germany, which are classified under subheading 8482.10.1080, Harmonized Tariff Schedule of the United States, at a 2.4 percent ad valorem duty rate and are subject to antidumping duties. The ball bearings are shipped by air and formally entered at John F. Kennedy International Airport. The total value of the shipment is $5,798.00. The applicable antidumping duty cash deposit rate is 68.89 percent. What are the total amount of fees and estimated duties that should be reported on CBP Form 7501?
April 2018 exam, question 19 · tests 8482.10.1080. Full question, answer and citation →

8483 — Transmission shafts (including camshafts and crankshafts) and cranks; bearing housings, housed bearings and plain shaft bearings; gears and gearing; ball or roller screws; gear boxes and other speed changers, including torque converters; flywheels and pulleys, including pulley blocks; clutches and shaft couplings (including universal joints); parts thereof

What is the CLASSIFICATION of a thrust bearing? The thrust bearing is circular shaped, made of steel, and contains no balls or rollers.
October 2023 exam, question 45 · tests 8483.30.80. Full question, answer and citation →

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